Vibrometer



Sept. 11, 1923. 1,467,373

w. w. GOWIB.

VIBROMBTER Filed Feb. 14 1922 Patented Sept. 11, 1923.

' warmer; w. eowm, or omna, nnnnasn.

VIBROMETER.

a lication filed February 14, 1922., Serial 1%. 586,459.

To all whom it may concern:

Be it known that WALTER lV. Gowns, a citizen of the United States of America, residin at Omaha, inthe county of Douglas and tate of Nebraska, has invented new and useful Improvements in Vibrometers, of which the following is aspecification.

' The object of the invention is to provide a simple and efiicienttool for readily and accurately determining the extent of vibration or lost motion of a shaft, spindle or like rotary machine elementwith reference to its bearing or sleeve in which it is mounted or through which it extends in the communication of motion to; related elements such as those which exist between a wrist pin and the knuckle of the connecting rod in a which it is fitted, for the purpose of acmaybe curately determining whether or not I the play or looseness is fexcessive or is only such as is necessary in order to insure a proper operation of the elements; and with this object in view the invention consists in a construction and combination of arts of* which a preferred embodiment is shown in the accompanying drawings, wherein:

Figure 1 is an elevation of a vibration measuring apparatus embodying the invention. r

Figure 2 is a side view of the same.

The device consists essentially of a sup port or standard 10 and a needlell reciprocably mounted in a'suitable guide 12 for movement longitudinally of the support or standard and yieldingly impelled in one direction by a spring 13 bearing at one end against the stationary guide 12 and at the other end against a collar 14 which is threaded or otherwise adjustably mounted upon the needle or stem which at one end is fitted witha bearing foot 15 and at the other end provided with a knob or handle 16.

It is proposed in determining the extent of vibration of a shaft such as indicated at 1 to place the support or standard 10 upon a stationar portion of the shaft bearing, in-

dicated or example at 18, with the bearing foot of the needle or stem in contact with the surface of the shaft and yieldingly held in contact therewith and subject to movement by any vibrations or oscillations of the shaft, so that the extent of such vibration may readily be determined by observin the ball or knob 1601' any like or preferre mdicating element, to the end that the operator curacy.

or engineer may determine whether the amount of vibration is excessive or is within the range ofapproved mechanical or engineering limits, and therefore whether bushin or adjustment isrequired or no the uti ity of the tool obviously'being apparent as well as with shafting which has been used and therefore which may re uire repairing or readjustment as with thatw ich is being erected and adjusted in the first instance. i

It is essential, however, for accuracy in theindications of the apparatus in connection with shafting which isin more or less rapid rotation and where the bearing may be subject to sympathetic vibration due to jarring or'otherwise, and more especially where it is desired to measure the extent of play or independent vibration of a spindle or wrist pin operating in the hearing or joint of a connecting rod or its equivalent, that the standard or support of the instrument .be held firmly seated on the bearing against ossibility of displacement or vibration independently thereof; and to this end the support or standard consists of a horse shoe Having described the invention, what is claimed as new and useful is:-

1. An-apparatus for measuring the extent 7 of vibration of a shaft or spindle in its bearing which consists of a standard or support and a vibratory needle carried by the same and yieldingly impelled in one direction for hearing contact with the surface of the shaft or spindle, the needle being provided with an 105 indicator.

2. An apparatus for measuring the extent of vibration of a shaft or spindle in its hearing which consists of a standard or support and a vibratory needle carried thereby and yieldingly, impelled in one direction for bearingcontact with the surface of the shaft or spindle, the needle being provided with an indicator and having a bearing foot for contact with the shaft or spindle and being adapted for arrangement in radial relation therewith.

3. An apparatus for measuring the extent of vibrationof a shaft or spindle in its hear- 'ing which consists of a standard or support and a vibratory needle yieldingly inipelled in one direction for hearing contact with the surface of the shaft or spindle, the support or standard having a guide in which the needle is slidably carried and the latter being provided with an indicator and actuable by a tensionable spring.

4. An apparatus for measuring the extent of vibration of a shaft or spindle in its bearing which consists of a standard or supportand vibratory needle carried thereby and yieldingly impelled in one direction for bear ing contact with the surface'of the shaft or spindle, the needle having an indicator and the support or standard having means for 6. An apparatus for measuring the extent of vibration of a shaft or spindle in its bearing which consists of a standard or support and a vibratory needle carried thereby and yieldingly impelled in one direction for hear ing contact with the surface of the shaft or spindle, the support or standard consisting of a horseshoe magnet for adhesive engagement with a bearing block.

In testimony whereof he affixes his signa ture. z WALTER W. GUWIN. 

